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From: John Baldwin <jhb@freebsd.org>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: ath0: unable to attach hardware
Date: Tue, 11 Dec 2012 15:49:49 -0500
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On Monday, December 10, 2012 5:20:53 pm Adrian Chadd wrote:
> Hi,
> 
> The fact the initial probe/attach fails by returning 0xffffffff means
> the chip isn't "right" on the bus.
> 
> It's either just not mapped in correctly, or it's "powered off."
> 
> If it were just asleep, it'd return 0xdeadc0de or 0xdeadbeef or
> something similar like that.
> 
> Try AR_SCR (0x4004) and AR_PCICFG (0x4010) .
> 
> Thanks,

Look, it's up to you to look at more registers if you want to debug this 
further.  PCI says everything is ok, so the ball is in your court.

-- 
John Baldwin